Antibiotic Nanofiltration Membrane Separation & Purification Technology
Background Introduction
Antibiotics are special metabolic products generated by microorganisms or higher animals and plants during their life activities. These metabolites can interfere with the developmental functions of other living cells and can be used to treat or inhibit pathogenic microbial infections. At present, there are more than ten thousand known natural antibiotics. According to their chemical structures, antibiotics are classified into quinolones, β-lactams, macrolides, aminoglycosides and other categories.
The current industrial production process of antibiotics generally consists of five stages: strain preparation, fermentation, fermentation broth pretreatment, extraction and purification, and finished product packaging. After antibiotic fermentation in traditional processes, the original fermentation broth contains a large number of biological residues, mycelia, proteins and other impurities, while the antibiotic content is only about 0.1~0.2%. Therefore, effective removal of impurities from the fermentation broth to produce high-purity antibiotic products compliant with pharmacopoeia standards is a critical step in extraction and purification procedures.
Disadvantages of Traditional Antibiotic Extraction and Purification Process
(1) The original fermentation broth contains excessive impurities, which reduces the efficiency of subsequent purification methods such as resin treatment and solvent extraction, hinders extraction and purification efficiency, and deteriorates final product quality;
(2) Fermentation broth is produced in large volume. Traditional thermal concentration methods including vacuum jacketed concentration and thin-film concentration require long processing time at high temperatures, resulting in extremely high production costs, deterioration of heat-sensitive substances and poor product market competitiveness.
Application of Membrane Separation Technology in Antibiotic Production
To solve the above problems, BluewavBio applies advanced nanofiltration membrane separation technology to the antibiotic production process based on years of practical membrane technology application experience. The separation precision of nanofiltration membranes ranges from 200 to 1000 Daltons, while the relative molecular weight of most antibiotics falls within 300 to 1200 Daltons. Thus, nanofiltration membrane technology can be applied to the separation, purification, concentration and solvent removal of antibiotics.
Large-pore nanofiltration membranes can effectively remove massive biological residues, mycelia, proteins and other impurities from fermentation broth, improve broth clarity, and further enhance the efficiency of subsequent purification processes such as resin treatment and extraction as well as final product quality.
Small-pore nanofiltration membranes realize normal-temperature concentration and solvent removal of fermentation broth with high concentration efficiency. Compared with traditional concentration methods, it greatly reduces concentration costs, protects heat-sensitive components from damage, removes inorganic salts and small-molecule impurities, and further improves the yield and quality of products in subsequent processes.
Advantages of Membrane Separation Technology in Antibiotic Extraction and Purification
(1) High membrane separation precision effectively removes a large number of biological residues, mycelia, proteins and other impurities from fermentation broth, improving broth clarity and reducing impurity content;
(2) Concentration membranes effectively retain target components and achieve concentration via dehydration, solvent removal, desalination and small-molecule impurity removal;
(3) Membrane concentration is conducted at normal temperature, minimizing the loss of active ingredients caused by high-temperature deterioration and ensuring stable product yield;
(4) Membrane concentration delivers high efficiency with production costs only about 1/5 of thermal concentration, greatly reducing enterprise operating costs;
(5) It is a pure physical separation process with no auxiliary agents added, effectively improving the working efficiency of subsequent resin and extraction purification processes;
(6) Equipped with automatic design and online regeneration cleaning and sewage discharge functions, it reduces labor intensity and realizes clean production;
(7) The entire equipment is made of sanitary-grade 304/316 stainless steel, complying with GMP certification standards.
Typical Applications
Antibiotics:Erythromycin, Penicillin, Oxytetracycline, Lincomycin, Cephalosporin, Spectinomycin, Vancomycin, Tobramycin, Rapamycin, etc.